Lamp shade



June 20, 1939 J: O HO AR 2,163,427

LAMP SHADE Filed Oct. 23, 1935 invention will be apparent as it Patented June 20, 1939 PAT NT OF'Fl-CE LAMP SHADE Joseph OJIoward, Chicago, 111., assignor to Sail- Me Company, Inc., Chicago,

0! Illinois 111., a corporation Application October 23, 1935, Serial No, 46,257

4 Claims.

This invention relates in general to lamp shades, and more particularly to an ornamental lamp shade adapted to be mounted upon a light bulb in such a manner as to be free to be rotated by rising warm air currents generated by the lighted bulb.

A principal object of the invention is the provislonof a lamp shade which may be easily and readily manufactured from a hollow cone of paper, parchment or the like.

Another important object of the invention is the provision of such a lamp shade in which the tip portion of the cone is used as a supporting member, which is adapted to be mounted upon a light bulb, and upon which the main portion of the shade is freely rotatably supported, said main portion comprising the frustum of the cone.

A further important object of the invention is the provision oi a lamp shade in which the upper portion of the main part of the shade comprises a plurality of radially disposed vanes formed integral with said main part and so shaped as to allow rising air currents to escape and rotate the same.

Another object of the invention is the provision or a retaining member for securing the hub portions of said vanes, and a bearing member secured to said retaining member and provided with a laterally extending counterweight integral therewith, said bearing member being adapted to rest ireely upon the supporting tip portion of the shade in the manner of a jewel bearing.

Numerous other objects and advantages of the is better understood from the following description, which, when taken in connection with the accompanying drawing, discloses a preferred embodiment thereoi.

in the drawing,

Figure l is an elevational view of a hollow cone comprising a blank from which the shade is adapted to be formed;

Fig. 2 is an exploded elevational view of the blank after the cutting operation has been performed;

Fig. 3 is a vertical sectional view through the main part of the shade after the vanes have been secured together;

Fig. i is a view similar to Fig. 3 after the bearing and counter-weight member has been secured in place;

Fig. 5 is an enlarged vertical sectional view through a portion of a completed shade embodying the features of the invention; and

Fig. 6 is a detail top plan view of Fig. 4 with parts broken away.

Referring more particularly to the drawing, reference numeral H indicates a hollow cone which is made up in the usual or well known manner from paper, parchment, or any other suitable material. By means of a cutting or stamping operation or operations, a tip portion 82 is severed from the main part l3 of the blank ii. Simultaneously with the cutting operation, or subsequently thereto, the upper portion of the frustum I3 is out along a plurality of curved lines It to form a series of similar and adjacent vane members 85. The upper portion of each of the vane members i5 is provided with a rounded outline and a substantially centrally located aperture E6.

The vane members is are bent inwardly and downwardly into the position shown in Fig. 3, in which the several apertures it are coincident with each other, and are secured in this position by means of an eyelet or retaining member il which engages the several apertures it. A dome shaped bearing member it is inserted in and secured in any suitable manner to the eyelet iii, and is provided with a horizontally disposed annular flange ii] upon which the lower surface of the eyelet it rests. Formed integrally with the flange 99 is a laterally extending counter-weight ii for a purpose to be later described.

The tip portion i2 is provided with an upstanding pin 22 extending through the apex thereof and secured thereto in any suitable mannor, as by means of heat resisting cement in use, the tip position adapted to be mounted upon a light bulb 24, as shown in Fig. 5. The main part E3 of the lamp shade is freely rotatably supported by. the tip portion Q? by means of the bearing member 58 resting upon the upstanding end of the pin 22. When the bulb i l is lighted the rising warm air current generated thereby will contact the vanes it and escape upwardly therebetween. Due to the particular shape of these vanes t5, the warm air currents will rotate the main part i3 of the shade related to the tip portion i2 and the bulb 24.

To insure even and properly balanced rotation of the main part 53 of the shade, the counterweight 2! is so positioned as to compensate for any added weight on one side of the shade due to the overlapping of the material as indicated at 25 in the formation of the cone ll.

It is thought that the invention and many of its attendant advantages will be understood from S2 or" the shades is the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. A lamp shade, comprising a frustum-shaped element having a plurality of radially disposed vane members at the upper portion thereof and formed integrally therewith to provide a unitary structure, and an axially disposed bearing member secured to said element adjacent the hub portions of said vane members, said bearing member being provided with an integral, laterally extending counter-weight.

2. A lamp shade, comprising a frustum-shaped element having a plurality of longitudinally curved, radially disposed vane members curved inwardly from the upper portion of the side walls thereof from contiguous relationship to each other in the plane of said side walls with their free ends superimposed upon each other, and an axially disposed bearing member secured to the free ends of said vane members to maintain them in such superimposed relationship.

3. In combination with a heat-emanating element, a revolvable member supported by and surrounding said element in spaced relationship thereto and having an open lower end, said member comprising an imperforate, frustum-shaped portion forming the side walls thereof and a top portion comprising a plurality of longitudinally curved, radially disposed vanes extending inwardly as continuations of said side walls to define, with the latter, continuous, smooth surfaces for guiding the convection air currents generated by said element upwardly through said member in an uninterrupted flow and for changing the direction of flow of said currents to cause said member to revolve about said element.

4. In combination with a heat-emanating element, a revolvable member supported by and surrounding said element in spaced relationship thereto and having an open lower end, said member comprising an imperforate, frustum-shaped portion forming the side walls thereof and a top portion comprising a plurality of longitudinally curved, radially disposed vanes extending inwardly as continuations of said side walls to define, with the latter, continuous, smooth surfaces for guiding the convection air currents generated by said element upwardly through said member in an uninterrupted flow, the trailing edge of each of said vanes being displaced above the leading edge of the next adjacent vane to define, with the latter, a discharge orifice for said air currents, and said vanes being curved so as to change the direction of flow of said currents to cause said member to revolve about said element.

JOSEPH 0. HOWARD. 

